My English Bulldog puppy is spitting up white foam every other week. What causes it?

Dog BreedsMy English Bulldog puppy is spitting up white foam every other week. What causes it?, My English Bulldog puppy is about 9 weeks old now. We took her to the vet 2 weeks ago and got her shots and dewormed. She is on Innova puppy ...

My English Bulldog puppy is spitting up white foam every other week. What causes it?

My English Bulldog puppy is about 9 weeks old now. We took her to the vet 2 weeks ago and got her shots and dewormed. She is on Innova puppy food since they have such delicate stomachs and drinks purified water. She first did it the day after we took her to the vet and the vet thought that it might be a reaction to the dewormer. They kept her the next day and finally got her to eat some wet food and thought she was fine. They ran some tests and couldn't figure it out. She started eating and drinking again the next day and went for about a week of eating and drinking fine but then it would happen again. She would not eat or drink anything for the whole day and occasionally spit up the white foamy stuff. She will do this and act moopy (sp) the whole day. Then at some point the next day she will start eating again and be fine for another week. I have read something about foam building up in the bulldogs throat and to treat this squirt lemon juice in their mouth to break it down. Could this be all it is? Please help.